Colour matching

GRI index

The Global Reporting Initiative's (GRI) Sustainability Reporting Guidelines, first published in 2000, updated in 2011 (G3.1) and more recently in 2013 (G4) and again in 2016 (GRI Standards), provide a framework for reporting on an organisation’s economic, social and environmental performance.

The Guidelines consist of Principles for defining report content and ensuring the quality of reported information together with information relating to Performance Indicators and other disclosure items, as well as guidance on specific technical topics in reporting.

We continue to report in line with the requirements of the GRI and have done so since 2011. This year we are reporting in accordance with the ‘Core’ option of the GRI G4 Sustainability Reporting Guidelines.

The G4 Guidelines have been superseded by the GRI Sustainability Reporting Standards (GRI Standards). The GRI Standards will be required for all reports or other materials published on or after 1 July 2018 – the G4 Guidelines remain available until this date. The GRI Standards are the first global standards for sustainability reporting. They feature a modular, interrelated structure, and represent the global best practice for reporting on a range of economic, environmental and social impacts.

More detail on application levels and a full description of the GRI, its aims, objectives and structure, together with the Guidelines / Standards themselves are available at

Details on how our 2017 sustainability reporting is aligned to the reporting elements and the required indicators of Global Reporting Initiative (GRI) G4 can be found in the PDF here.

Copies of our key CR policies and the terms of reference for the CR Advisory Group are published on our downloads page.